92: The air in a gas turbine plant passes from the compressor through a heat exchanger, heated by exhaust gases coming from a low-pressure turbine. The air then enters the high- pressure combustion chamber. The high-pressure turbine drives the compressor only. The exhaust gases coming out of the high-pressure turbine is heated into a low-pressure combustion chamber and then enters the low-pressure turbine, which is coupled to external load. Pressure ratio in the compressor is 4:1, isentropic efficiency of the compressor, H.P. turbine, and L.P, turbine are 0,83, effectiveness of heat exchanger is 0.75, mechanical efficiency of the drive to the compressor is 0.9, temperature of gases entering HP and LP turbine, 660°C and 625°C respectively, atmospheric pressure and temperature are 1 bar and 17°C. Assume specific heat of gas and air as 1.005kJ/kg K and 7-14. Calculate the overall efficiency of the plant that shown in figure in the second page.

hints: The flask will be filled with water (at a constant rate of 500 gallons per minute). It will take me exactly 10 minutes to escape from the chains. The diameter of the tank at 1 foot intervals. I am 5 feet 9 inches tall, and I'm pretty skinny so that you can ignore both my volume and the volume of the stool in your analysis. A gallon is equal to 0.13368 cubic feet.  You can think of the volume and the height of the water as functions of time. You can easily find an expression for V (t), and then use your expression for volume in terms of height to solve for h(t). after 10 minutes amount of water in the tank=66.84 ft3 t=69.3 minutes h(t)=e66.84t/100pi  -1 h(10)=e66.84(10)/100pi  -1=7.39 ft  Height of stool=1.64 ft Height of water in the tank=7.39 ft Questions: show work How fast is the water rising?  I would like to know how long I will have to hold my breath during the last part of the stunt.

i cant see the full workings out even on a pc, please present again so that i can see the whole answer. please make it easy to follow

6. Please help me solve this mech. engineering question